Mixer



W. J. PEES.

MIXER.

APPLICATION FILED MAR. 15. 1917.

I 1,337,468. Patented Apr. 20,1920.

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MIX

1i,333?,4ti5-3. Specification of Letters Pat Application filed March 15, 1817.

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2 a. central vertical section of one mixer. 3 an end view 01 one element of the 2. marks the base of the machine and lg .t posts for carryin the drum and .ig shaft e drum. 0 th shaft carrying the minn blades, 5 and hearings on the posts 2 and respectively for the shaft 5. s arranged on the ends and studs 9 extend from the ends of the shaft 5 through the caps 8. Nuts 10 arranged on the studs and by means of this structure the caps may be adjusted so as to receive the end thrustdue to the action of the mixing blades.

ihe drum is provided with the ends 11 and the hollow trunnions 12 extend from the ends 11. These are journaled in the bearings 13 on the upper ends of the posts 2 and 3. The opening through the trunnion 12 is somewhat larger than the shaft leaving a space 14, the purpose of this space being to allow a free discharge of any material which may leak past the joint from the drum. The plate 15 having a joint surface is secured to the inside of the end 11 by means of screws 16, the screws having countersunk heads 17. A joint plate 18 open ates against the surface on the plate 15 to form a joint to close the end of the drum Z ATiEE NT QFFICE.

around the shaft 5. This joint plate is made in halves an d it preferably has flange 19 surrounding the edge of the plate 15. A spr g hoising 20 extends rearwardly from the oint plate and fits over the shaft 5, the shaft 5 being in this portion octagonal in shape so that the connection of the h0using with the shaft locks the joint plate ro tativel with the shaft. The halves of the joint plate are secured together by bolts 21. A conical spring 22' having its small end seated against a shoulder on the shaft exerts pressure aga nst the joint plate and holds it i'- coi'ita at with the joint surface on in this manner there is a '.re "9lt(.l on the joint plate thus assuring a closure be- .e surfa e oi. the joint plate and the all times. There is suficient housing 20 and the part it permit any slight n1ove- "oint plate that may be neceso compensate 1.01 a lack of alinement surfaces. Any material that may iealr into the housing 20 must go in such small quantities as to prevent a complete filling and soiidifying in the housing. This is particularly true where the mixer is used for concrete because if the housing were completely filled with mixture it might set when the machine stopped and the device would be put out of action.

Buzzing blades 25 and a 3 ing a lubricant to are carried by the shaft 2% is provided for forethe oint an opening 26 l. The combination of a drum having a joint surface on the inside end thereof; a hollow trunnion extending from the drum; a .naft extending through the drum, the shaft being of a size leaving a space between the trunnion and shaft; a joint plate on the shaft seating on the joint surface on the drum; spring pressing the oint plate and surface together; and a housing for the s protecting the spring from the material within the drum, the space in the housing being in communication with the space between the shaft and trunnion.

2'. The combination of a drum having a bearing surface on the inside end thereof; a shaft through the drum; a joint plate on the shaft seating on said surface; a spring on the shaft exerting pressure on the joint plate and pressing the joint plate against the bearing surface; and a housing extending from the joint plate over the spring.

The combination of a drum having a bearing surface on the inside end thereof; a shaft through the drum; a joint plate on the shaft seating on said surface; a spring on the shaft exerting pressure on the joint plate and pressing the joint plate against the bearing surface; and a housing extending from the joint plate over the sprin said housing engaging the shaft and looking the joint plate rotatively with the shaft.

4. The combination of a drum having a bearing surface on the inside end thereof;

a shaft extending through the drum, there being an opening between the bearing surface and the shaft; a joint plate forming a bearing surface with the joint surface; a housing extending from the joint plate and engaging the shaft locking the joint plate rotatively with the shaft; a shoulder on the shaft within the housing; a spring resting on the shoulder and against the joint plate; a trunnion extending from the end of the drum; a bearing for the trunnion; and a bearing for the shaft outside of the trunnion.

5. The combination of a drum having a bearing surface on the inside end thereof; a hollow trunnion extending upwardly from the drum; a bearing in which the trunnion operates; a shaft extending through the trunnion and spaced therefrom; a bearing outside of the drum for the shaft; a joint plate on the shaft seating on the surface; a spring pressing the joint plate and surface together; and a housing protecting the spring from material within the drum the space within the housing being in communication with the space between the shaft and trunnion.

In testimony whereof I have hereunto set my hand.

lVALTER J. FEES. 

